import store from '../store/index.js'
import config from '../config'
import { getToken } from './auth'
import errorCode from './errorCode'
import { toast, showConfirm, tansParams } from './common'

let timeout = 10000
const baseUrl = config.baseUrl

const request = config => {
  // 是否需要设置 token
  const isToken = (config.headers || {}).isToken === false
  config.header = config.header || {}
  if (store.getToken() && !isToken) {
    config.header['Authorization'] = 'Bearer ' + store.getToken()
  }
  // get请求映射params参数
  if (config.params) {
    let url = config.url + '?' + tansParams(config.params)
    url = url.slice(0, -1)
    config.url = url
  }
  
  return new Promise((resolve, reject) => {
    wx.request({
      method: config.method || 'get',
      timeout: config.timeout || timeout,
      url: config.baseUrl || baseUrl + config.url,
      data: config.data,
      header: config.header,
      dataType: 'json',
      success: function(res) {
        const code = res.data.code || 200
        const msg = errorCode[code] || res.data.msg || errorCode['default']
        if (code === 401) {
          showConfirm('登录状态已过期，您可以继续留在该页面，或者重新登录?').then(res => {
            if (res.confirm) {
              store.LogOut()
              wx.reLaunch({ url: '/pages/login/login' })
            }
          })
          reject(new Error('无效的会话，或者会话已过期，请重新登录。'))
        } else if (code === 500) {
          toast(msg)
          reject(new Error(msg || '服务器内部错误'))
        } else if (code !== 200) {
          toast(msg)
          reject(new Error(msg || '请求失败'))
        }
        resolve(res.data)
      },
      fail: function(error) {
        let { errMsg } = error
        if (errMsg === 'Network Error') {
          errMsg = '后端接口连接异常'
        } else if (errMsg.includes('timeout')) {
          errMsg = '系统接口请求超时'
        } else if (errMsg.includes('request:fail')) {
          errMsg = '系统接口连接异常'
        }
        toast(errMsg)
        reject(error)
      }
    })
  })
}

export default request